Coating thickness measuring gauge



FIG. 1 is a top and side perspective view of my new coating thickness measuring gauge;

FIG. 2 is a top and side perspective view thereof;

FIG. 3 is a side elevation, it being understood that the view from all sides is identical;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines in FIG. 1 showing a ceiling is for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for a coating thickness measuring gauge, as shown and described. 